Manitoba displays a large range of vegetation types that are arranged with a climatically determined north/south zonation. Grass-covered areas in the south give way to parkland and forested areas further north and eventually to shrub tundra in the extreme northeast.
In southern and west central Manitoba, agriculture, grazing, forestry and urban development have drastically altered the natural vegetation, but vast areas in the north and northeast are in near pristine state. Vegetation that often obscures the earth’s surface is clearly shown on air photos; particularly useful are colour infrared images that can detect stressed areas. Wetlands cover about 40 percent of Manitoba and do not conform to the climatically determined zonal distribution of vegetation. They occur in all parts of the province and provide distinctive ground cover well shown on air photos.
Individual animals are too small to appear on all except very large-scale images. However, some animals (e.g. beaver) profoundly affect drainage systems.
Figure 5.26: Floating Fen in Shirley Lake West of North Moose Lake
Vertical air photograph: A19737-139
Flight height: 8,920 feet a.s.l.; camera focal length: 152.8 mm
Scale: 1:16,000 (approx.)
Date: September 14, 1966
Location: Township 57; Range 21 WI
Map sheets: 1:250,000 63F The Pas
1:50,000 63F/15 Landry Lake
[i] Interpretation is from Mollard op. cit., plate 12.10a.